Apparatus for removing surplus metal from coated articles.



'No. 650,|I4. Patented May 22, I900. G. PORTER.

APPARATUS FOR REMOVING SURPLUS METAL FROM COATED ARTICLES. {Ap plicationfiled Now-20, 1899.) (No Model.)

UNITED STATES.

"PATENT OFFICE.

GEORGE PORTEB, OF SAN FRANCISCO, CALIFORNIA.

APPARATUS POR REMOVING SURPLUS METAL FROM COATED ARTICLES.

SPECIFICATION forming part of Letters Patent No. 659,114, dated May 22,1900; u ion fi1 1N0vemher2U,1899- Serial No. 737.635. (No model.)

To all whom it may concern.-

Be it known that I, GEORGE PORTER, a citizen of the United States,residing in the city and county of San Francisco, State of California,have invented an Improvement in Apparatus for Removing Surplus Metalfrom Coated Articles; and I hereby declare the following to be a full,clear, and exact description of the same.

My invention relates to an apparatus which is designed for the cleansingand preparation of nails which have been previously coated with moltenzinc or equivalent protecting metal and which process is technicallycalled galvanizing. V

The object of myinvention is to provide a mechanism and apparatus bywhich the surplus fused metal adhering to the nails can be cleaned OEand the nails left in a smooth and merchantable condition.

Referring to the accompanying drawings, Figure 1 is a longitudinalvertical section through the apparatus, showing portions of theframework omitted. Fig. 2 is a detail section of the coarse screen andconnections. Fig. 3 is a reduced vertical transverse section on the linex w of Fig. 1. Fig. 4 is areduced vertical transverse section on theline y y of Fig. 1. Fig. 5 is a similar view on the line 2 z of Fig. 1.

Nails and similar articles are coated with tin, zinc, or equivalentprotecting metal which. is less liable to corrosion than the iron of thenails by submerging the articles to be coated in the molten coatingmetal. It is difficult to afterward clean the nails of the surplusadherent metal so that they are in condition for use, and many times thenails become stuck together in masses when they cool by reason of thissurplus metal.

In my invention A is a hopper leading into a casing 2, into which thearticles are first delivered. This casing may be of any suitable size orshape. In the present case it is shown cylindrical and having thesegmental waterjackets 3, with their concaved faces presented towardeach other upon opposite sides of the space through which the articlesto be cleansed fall when they leave the hopper A. Within this spacebetween the arched jackets 3 are inclined floors 4. Above these floorsare revoluble shafts having agitating arms or beaters, as shown at 5.These shafts extend across the case in the path of the falling articles,and by their revolution the beater-arms violently strike the articlesand knock on a large portion of the adherent fused-metal. The articlesstriking upon the inclines 4 fall through between them, and below theinclines they encounter one or more revoluble beaters 6, by which theyare again struck and agitated. From this portion of the apparatus thearticles fall upon aninclined table 7, down which they move and aredelivered into a hollow cylinder 8, being mounted upon a longitudinalshaft suitably journaled, so that the cylinder may be revolved, andwithin the cylinder are spirals which act to carry the articles throughit and to assist in further agitation thereof for the purpose ofremoving any remaining particles of metal adhering to the nails. Thecylinder is here shown as journaled at an incline within an eterioropentopped trough 9. TVhen the nails .or, other articlesaredischarged from the lower end of the cylinder 8, they fall upon ascreen-sure face 10. Beneath this screen is a close floor 11, which issufficiently near to thelower portion of the screen to prevent thenailsstanding in the holes of the screen and sticking in place. The depthfrom the screen 10 to the floor 11 is so little that the nails will notstick, but will move over the screen, and this is sufe ficiently coarseto allow particles of metal which have been separated from the nails orother articles to fall through upon the floor 11.

The open-topped trough 9, in which the screen is carried, is given'ashaking motion by means of a crank or eccentric 12 and a rod 18,connecting it with the trough, the latter being suitably suspended orsupported by hang ers or movable posts, so that the action of the crankor eccentric may be communicated to it. This shaking motion causes thenails to travel first down the incline 7 and be delivered into therotating cylinder 8. Thence they are delivered upon the screen 10,together with any particles of metal which may have been previouslyseparated from them, and in their movement over this screen theparticles of metal fall through upon the floor 11, and

by the shaking motion this metal is conducted to a discharge-chute 14,which collects any metal that has reached this point.

" ED-above the former.

. Patent, .is-

15 is another screen situated farther down the trough 9 and in position:toreceivethe nails from the screen 10. This screen is somewhat finerthan the screen 10, and as the nails pass over itthey are subjected to ajet or spray of water from the supply pipeor tube 16, which assists tocool them. In addition to this I have also shown an air-blast fan at 17,which may be employed for the same purpose. "Be-i neath this screen 15is a converging hopper 18, by which the water is collected and con-'veyed away-after passing through the screen The nails after being cooledandmadereadv are discharged through a passage 19in the, lower end of thetrough 9, or they may be collected in any other suitable manner.

jBymeans of this apparatus I am enabled to rapidly and perfectly cleansethe nails or other articles'from allsurplus metal and-to gradu-g'allycool them down as the operation proceeds untilathey areread ytodeliver into packages 'in whicbthey are to-be stored or sold. The?amountof coating material thus-saved isfromf teni toltwelve percent, thenumber of men; employed is reduced, and the output is greatly?increased. i To 0001 01f the cylinder 8, I have fixed-a pipel Thispipe-is 4 provided withfjets inits bottom todeliver-a constant stream:of water on'the cylinder. f

H-av'ing'thus described my invention, what I claim as new, and desire tosecure by Letters} 1. An apparatus for removin'g hot surplus} metal'from previously-coated articles, con-. sisting of a chamber havingconvergent]; shelves interior thereto, revolving beatersf journaled andturn able above and below said; shelves, and a hopper for directing thearti; cles intosaid chamber. 5

"2; An apparatus for removing surplus'hot,

metal from previously-coated articles, consisting of achamberopen attop-and bottomi having a supply-hopper, interior concavedv water-jackets between which the articles pass; fromthe supply, beaters-journaled and turnable in the upper portion of the chamber, con vergentshelves by which the articles-are collected afterpassing the heaters,and-,de-I livered through the space between-theshelves, and otherrevoluble heaters below the shelves in the; path ofthe falling articles.j 3. "An apparatus for removing hot surplus metal "frompreviously-coated articles, con-. sisting of the chamber to which thearticles the articles are delivered fromthe table and "through whichthey are caused to pass.

4. An apparatus for removing hot surplus metal from previously-coatedarticles, consisting of a chamber having heaters, directing-shelves andcooling-jackets, an inclined revolublecylinderwith spiral ribs,aninclined .directingifloor. or. chute by which the articles are conveyedfrom the first chamber to the cylinder, and a shaking-screen uponwhichthey are delivered 'from the cylinder.

5. An apparatusfor removingfhot vsurplus metal from previously-coatedarticles, consisting of achamber with'beaters and I cooling-jackets, aninclined spirally-ribbed revoluble 7 cylinder, a directing-chute bywhich the articles are delivered-from the-first chamber-to the-cylinder,a screen upon which the articles are received from the cylinder, a

close floor'extending beneath the screen adapted J to recei ve theparticles of separated metal and a discharge opening or chute through:whichs-aidmetal is collected.

6. An ELPPEUQIHSfOI 'removing'hot surplus metal from previously-coatedarticles consisting of a cooling-chamber withbeaters,an

inclined revoluble spirally-ribbed cylinder and a directing-board bywhich the articles are delivered from the first chamber to the cylinder,a shaking separating-screedupon which the articles and separated'particles arereceived, a collecting-floor and. discharge for'the-metalbeneath thesc-reenya second screen upon which the nails are deliveredand an air-blast and spraying device for cool 5 ing them asthey; passover the second screen to'the point of delivery.

7. An apparatus for removing surplus metal from coatedarticles'including meansfor removing the surplus metal, amechanicallyagitated conveyer-into which'the articles are received,means 'for conductingthe articles through the conveyer'andmeans forseparating said articles and vthe'removed material.

In-witness whereof -I have hereunto set my hand.

GEORGE PORTER. Vllitnesises EUGENE W. LEVY, WM. M. MAGUIRE.

